Cal Omega - Game 17.6 Memory Map

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Memory Map

The following is a memory map that was generated based on the MAME source code (.180). This information is only as accurate as the MAME driver is. If you see any errors, please let me know what that error is.

The Memory Area is related to where the information is from (CPU, Sound Board, etc..), and it may also reflect what it has in common with other hardware.

Cal Omega - Game 17.6 (Cal Omega Inc., 1982)

Memory Area:sys903_map

Address Range	Length	Function	Description
0x0000-0x07FF	2048	RAM, Shared	nvram
0x0840-0x0841	2	Device Write	ay8912, ay8910_device, address_data_w
0x0880	1	Device Write	crtc, mc6845_device, address_w
0x0881	1	Device Read/Write	crtc, mc6845_device, register_r, register_w
0x08C4-0x08C7	4	Device Read/Write	pia0, pia6821_device, read, write
0x08C8-0x08CB	4	Device Read/Write	pia1, pia6821_device, read, write
0x08D0	1	Device Read/Write	acia6850_0, acia6850_device, status_r, control_w
0x08D1	1	Device Read/Write	acia6850_0, acia6850_device, data_r, data_w
0x1000-0x13FF	1024	RAM Write, Shared	calomega_videoram_w, videoram
0x1400-0x17FF	1024	RAM Write, Shared	calomega_colorram_w, colorram
0x1800-0x3FFF	10240	ROM

ROM Map for this game

This is the ROM map for the game. This should tell you what address the ROM is at, how big it is, what it's used for.

Memory Area:gfx1

Address Range	Length	Label/Location	Description
0x0000-0x07FF	2048	nbcg0.u67	CRC(b4b01f22) (Fluke: A827)

Memory Area:gfx2

Address Range	Length	Label/Location	Description
0x0000-0x0FFF	4096	nbcgc.u70	CRC(f7ca234f) (Fluke: 7C54)
0x1000-0x1FFF	4096	nbcgb.u69	CRC(9d409932) (Fluke: DAE9)
0x2000-0x2FFF	4096	nbcga.u68	CRC(afe1a666) (Fluke: A843)

Memory Area:maincpu

Address Range	Length	Label/Location	Description
0x1800-0x1FFF	2048	17-61.u5	CRC(7b201d27) (Fluke: BF87)
0x2000-0x27FF	2048	17-62.u6	CRC(0ce87971) (Fluke: D4CB)
0x2800-0x2FFF	2048	17-63.u7	CRC(adce3e97) (Fluke: D998)
0x3000-0x37FF	2048	17-64.u8	CRC(2a48525a) (Fluke: 3EA9)
0x3800-0x3FFF	2048	17-65.u9	CRC(d4d929fa) (Fluke: 2F80)

Memory Area:proms

Address Range	Length	Label/Location	Description
0x0000-0x00FF	256	bclr.u28	CRC(0ec45d01) (Fluke: 8BC8)